23.758 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.023 * [progress]: [Phase 2 of 3] Improving.
0.024 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.024 * * [simplify]: Extracting # 0 : cost  0
0.024 * * [simplify]: Extracting # 1 : cost  0
0.024 * * [simplify]: Extracting # 2 : cost  0
0.024 * * [simplify]: Extracting # 3 : cost  0
0.024 * * [simplify]: Extracting # 4 : cost  0
0.024 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.025 * * [simplify]: Extracting # 0 : cost  0
0.025 * * [simplify]: Extracting # 1 : cost  0
0.025 * * [simplify]: Extracting # 2 : cost  0
0.025 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.027 * * [simplify]: Extracting # 0 : cost  0
0.027 * * [simplify]: Extracting # 1 : cost  0
0.027 * * [simplify]: Extracting # 2 : cost  0
0.027 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.031 * * [simplify]: Extracting # 0 : cost  0
0.031 * * [simplify]: Extracting # 1 : cost  0
0.031 * * [simplify]: Extracting # 2 : cost  0
0.031 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.041 * * [simplify]: Extracting # 0 : cost  0
0.042 * * [simplify]: Extracting # 1 : cost  0
0.042 * * [simplify]: Extracting # 2 : cost  0
0.042 * * [simplify]: iteration  4 :  67  enodes  (cost  7 )
0.075 * * [simplify]: Extracting # 0 : cost  0
0.075 * * [simplify]: Extracting # 1 : cost  0
0.075 * * [simplify]: Extracting # 2 : cost  0
0.075 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.145 * * [simplify]: Extracting # 0 : cost  0
0.146 * * [simplify]: Extracting # 1 : cost  0
0.146 * * [simplify]: Extracting # 2 : cost  0
0.146 * * [simplify]: iteration  6 :  271  enodes  (cost  7 )
0.293 * * [simplify]: Extracting # 0 : cost  0
0.294 * * [simplify]: Extracting # 1 : cost  0
0.295 * * [simplify]: Extracting # 2 : cost  0
0.295 * * [simplify]: Extracting # 3 : cost  0
0.296 * * [simplify]: iteration  7 :  514  enodes  (cost  7 )
1.299 * * [simplify]: Extracting # 0 : cost  0
1.302 * * [simplify]: Extracting # 1 : cost  0
1.304 * * [simplify]: Extracting # 2 : cost  0
1.307 * * [simplify]: Extracting # 3 : cost  0
1.309 * * [simplify]: Extracting # 4 : cost  0
1.311 * * [simplify]: iteration  8 :  1901  enodes  (cost  7 )
11.831 * * [simplify]: Extracting # 0 : cost  0
11.844 * * [simplify]: Extracting # 1 : cost  0
11.847 * * [simplify]: Extracting # 2 : cost  0
11.850 * * [simplify]: Extracting # 3 : cost  0
11.853 * * [simplify]: Extracting # 4 : cost  0
11.856 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
11.856 * [simplify]: Simplified to:
  (- (* x x) (* y y))
11.857 * * [progress]: iteration 1 / 4
11.857 * * * [progress]: picking best candidate
11.858 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
11.858 * * * [progress]: localizing error
11.863 * * * [progress]: generating rewritten candidates
11.863 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
11.872 * * * [progress]: generating series expansions
11.872 * * * * [progress]: [ 1 / 1 ] generating series at (2)
11.874 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
11.874 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
11.874 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
11.874 * [taylor]: Taking taylor expansion of (pow x 2) in y
11.874 * [taylor]: Taking taylor expansion of x in y
11.874 * [backup-simplify]: Simplify x into x
11.874 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.874 * [taylor]: Taking taylor expansion of y in y
11.874 * [backup-simplify]: Simplify 0 into 0
11.874 * [backup-simplify]: Simplify 1 into 1
11.874 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
11.874 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.874 * [taylor]: Taking taylor expansion of x in x
11.874 * [backup-simplify]: Simplify 0 into 0
11.874 * [backup-simplify]: Simplify 1 into 1
11.874 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.874 * [taylor]: Taking taylor expansion of y in x
11.874 * [backup-simplify]: Simplify y into y
11.874 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
11.874 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.874 * [taylor]: Taking taylor expansion of x in x
11.874 * [backup-simplify]: Simplify 0 into 0
11.874 * [backup-simplify]: Simplify 1 into 1
11.874 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.874 * [taylor]: Taking taylor expansion of y in x
11.874 * [backup-simplify]: Simplify y into y
11.874 * [backup-simplify]: Simplify (* y y) into (pow y 2)
11.874 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
11.874 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
11.874 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
11.874 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.874 * [taylor]: Taking taylor expansion of y in y
11.874 * [backup-simplify]: Simplify 0 into 0
11.874 * [backup-simplify]: Simplify 1 into 1
11.875 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
11.875 * [backup-simplify]: Simplify (- 0) into 0
11.875 * [backup-simplify]: Simplify (+ 0 0) into 0
11.875 * [taylor]: Taking taylor expansion of 0 in y
11.875 * [backup-simplify]: Simplify 0 into 0
11.875 * [backup-simplify]: Simplify 0 into 0
11.875 * [backup-simplify]: Simplify (* 1 1) into 1
11.876 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
11.876 * [backup-simplify]: Simplify (- 0) into 0
11.876 * [backup-simplify]: Simplify (+ 1 0) into 1
11.876 * [taylor]: Taking taylor expansion of 1 in y
11.876 * [backup-simplify]: Simplify 1 into 1
11.876 * [backup-simplify]: Simplify 1 into 1
11.876 * [backup-simplify]: Simplify 0 into 0
11.877 * [backup-simplify]: Simplify (* 1 1) into 1
11.877 * [backup-simplify]: Simplify (- 1) into -1
11.877 * [backup-simplify]: Simplify -1 into -1
11.878 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.878 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
11.878 * [backup-simplify]: Simplify (- 0) into 0
11.878 * [backup-simplify]: Simplify (+ 0 0) into 0
11.878 * [taylor]: Taking taylor expansion of 0 in y
11.879 * [backup-simplify]: Simplify 0 into 0
11.879 * [backup-simplify]: Simplify 0 into 0
11.879 * [backup-simplify]: Simplify 0 into 0
11.879 * [backup-simplify]: Simplify 0 into 0
11.879 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.879 * [backup-simplify]: Simplify (- 0) into 0
11.879 * [backup-simplify]: Simplify 0 into 0
11.880 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
11.880 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
11.881 * [backup-simplify]: Simplify (- 0) into 0
11.881 * [backup-simplify]: Simplify (+ 0 0) into 0
11.881 * [taylor]: Taking taylor expansion of 0 in y
11.881 * [backup-simplify]: Simplify 0 into 0
11.881 * [backup-simplify]: Simplify 0 into 0
11.881 * [backup-simplify]: Simplify 0 into 0
11.881 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
11.884 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
11.885 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
11.885 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
11.885 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
11.885 * [taylor]: Taking taylor expansion of (pow x 2) in y
11.885 * [taylor]: Taking taylor expansion of x in y
11.885 * [backup-simplify]: Simplify x into x
11.885 * [backup-simplify]: Simplify (* x x) into (pow x 2)
11.885 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
11.885 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
11.885 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.885 * [taylor]: Taking taylor expansion of y in y
11.885 * [backup-simplify]: Simplify 0 into 0
11.885 * [backup-simplify]: Simplify 1 into 1
11.885 * [backup-simplify]: Simplify (* 1 1) into 1
11.886 * [backup-simplify]: Simplify (/ 1 1) into 1
11.886 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
11.886 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
11.886 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.886 * [taylor]: Taking taylor expansion of x in x
11.886 * [backup-simplify]: Simplify 0 into 0
11.886 * [backup-simplify]: Simplify 1 into 1
11.886 * [backup-simplify]: Simplify (* 1 1) into 1
11.886 * [backup-simplify]: Simplify (/ 1 1) into 1
11.886 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
11.886 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.886 * [taylor]: Taking taylor expansion of y in x
11.886 * [backup-simplify]: Simplify y into y
11.886 * [backup-simplify]: Simplify (* y y) into (pow y 2)
11.887 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
11.887 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
11.887 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
11.887 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.887 * [taylor]: Taking taylor expansion of x in x
11.887 * [backup-simplify]: Simplify 0 into 0
11.887 * [backup-simplify]: Simplify 1 into 1
11.887 * [backup-simplify]: Simplify (* 1 1) into 1
11.887 * [backup-simplify]: Simplify (/ 1 1) into 1
11.887 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
11.887 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.887 * [taylor]: Taking taylor expansion of y in x
11.887 * [backup-simplify]: Simplify y into y
11.887 * [backup-simplify]: Simplify (* y y) into (pow y 2)
11.887 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
11.888 * [backup-simplify]: Simplify (+ 1 0) into 1
11.888 * [taylor]: Taking taylor expansion of 1 in y
11.888 * [backup-simplify]: Simplify 1 into 1
11.888 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.888 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
11.889 * [backup-simplify]: Simplify (+ 0 0) into 0
11.889 * [taylor]: Taking taylor expansion of 0 in y
11.889 * [backup-simplify]: Simplify 0 into 0
11.889 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
11.890 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.890 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
11.890 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
11.890 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
11.890 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
11.890 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.890 * [taylor]: Taking taylor expansion of y in y
11.890 * [backup-simplify]: Simplify 0 into 0
11.890 * [backup-simplify]: Simplify 1 into 1
11.890 * [backup-simplify]: Simplify (* 1 1) into 1
11.891 * [backup-simplify]: Simplify (/ 1 1) into 1
11.891 * [backup-simplify]: Simplify (- 1) into -1
11.891 * [backup-simplify]: Simplify -1 into -1
11.891 * [backup-simplify]: Simplify 1 into 1
11.891 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
11.892 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.892 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
11.892 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
11.892 * [backup-simplify]: Simplify (- 0) into 0
11.893 * [backup-simplify]: Simplify (+ 0 0) into 0
11.893 * [taylor]: Taking taylor expansion of 0 in y
11.893 * [backup-simplify]: Simplify 0 into 0
11.893 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.893 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
11.894 * [backup-simplify]: Simplify (- 0) into 0
11.894 * [backup-simplify]: Simplify 0 into 0
11.894 * [backup-simplify]: Simplify 0 into 0
11.894 * [backup-simplify]: Simplify 0 into 0
11.894 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
11.895 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.895 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
11.895 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
11.896 * [backup-simplify]: Simplify (- 0) into 0
11.896 * [backup-simplify]: Simplify (+ 0 0) into 0
11.896 * [taylor]: Taking taylor expansion of 0 in y
11.896 * [backup-simplify]: Simplify 0 into 0
11.896 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
11.897 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.897 * [backup-simplify]: Simplify (- 0) into 0
11.897 * [backup-simplify]: Simplify 0 into 0
11.897 * [backup-simplify]: Simplify 0 into 0
11.897 * [backup-simplify]: Simplify 0 into 0
11.898 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
11.898 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
11.898 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
11.898 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
11.898 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
11.898 * [taylor]: Taking taylor expansion of (pow x 2) in y
11.898 * [taylor]: Taking taylor expansion of x in y
11.898 * [backup-simplify]: Simplify x into x
11.898 * [backup-simplify]: Simplify (* x x) into (pow x 2)
11.898 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
11.898 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
11.898 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.898 * [taylor]: Taking taylor expansion of y in y
11.898 * [backup-simplify]: Simplify 0 into 0
11.898 * [backup-simplify]: Simplify 1 into 1
11.898 * [backup-simplify]: Simplify (* 1 1) into 1
11.899 * [backup-simplify]: Simplify (/ 1 1) into 1
11.899 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
11.899 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
11.899 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.899 * [taylor]: Taking taylor expansion of x in x
11.899 * [backup-simplify]: Simplify 0 into 0
11.899 * [backup-simplify]: Simplify 1 into 1
11.899 * [backup-simplify]: Simplify (* 1 1) into 1
11.899 * [backup-simplify]: Simplify (/ 1 1) into 1
11.899 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
11.899 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.899 * [taylor]: Taking taylor expansion of y in x
11.899 * [backup-simplify]: Simplify y into y
11.899 * [backup-simplify]: Simplify (* y y) into (pow y 2)
11.900 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
11.900 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
11.900 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
11.900 * [taylor]: Taking taylor expansion of (pow x 2) in x
11.900 * [taylor]: Taking taylor expansion of x in x
11.900 * [backup-simplify]: Simplify 0 into 0
11.900 * [backup-simplify]: Simplify 1 into 1
11.900 * [backup-simplify]: Simplify (* 1 1) into 1
11.900 * [backup-simplify]: Simplify (/ 1 1) into 1
11.900 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
11.900 * [taylor]: Taking taylor expansion of (pow y 2) in x
11.900 * [taylor]: Taking taylor expansion of y in x
11.900 * [backup-simplify]: Simplify y into y
11.900 * [backup-simplify]: Simplify (* y y) into (pow y 2)
11.900 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
11.901 * [backup-simplify]: Simplify (+ 1 0) into 1
11.901 * [taylor]: Taking taylor expansion of 1 in y
11.901 * [backup-simplify]: Simplify 1 into 1
11.901 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.902 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
11.902 * [backup-simplify]: Simplify (+ 0 0) into 0
11.902 * [taylor]: Taking taylor expansion of 0 in y
11.902 * [backup-simplify]: Simplify 0 into 0
11.902 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
11.903 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.903 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
11.903 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
11.903 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
11.903 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
11.903 * [taylor]: Taking taylor expansion of (pow y 2) in y
11.903 * [taylor]: Taking taylor expansion of y in y
11.903 * [backup-simplify]: Simplify 0 into 0
11.903 * [backup-simplify]: Simplify 1 into 1
11.903 * [backup-simplify]: Simplify (* 1 1) into 1
11.904 * [backup-simplify]: Simplify (/ 1 1) into 1
11.904 * [backup-simplify]: Simplify (- 1) into -1
11.904 * [backup-simplify]: Simplify -1 into -1
11.904 * [backup-simplify]: Simplify 1 into 1
11.904 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
11.905 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.905 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
11.905 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
11.906 * [backup-simplify]: Simplify (- 0) into 0
11.906 * [backup-simplify]: Simplify (+ 0 0) into 0
11.906 * [taylor]: Taking taylor expansion of 0 in y
11.906 * [backup-simplify]: Simplify 0 into 0
11.906 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
11.907 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
11.907 * [backup-simplify]: Simplify (- 0) into 0
11.907 * [backup-simplify]: Simplify 0 into 0
11.907 * [backup-simplify]: Simplify 0 into 0
11.907 * [backup-simplify]: Simplify 0 into 0
11.908 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
11.908 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.908 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
11.909 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
11.909 * [backup-simplify]: Simplify (- 0) into 0
11.909 * [backup-simplify]: Simplify (+ 0 0) into 0
11.909 * [taylor]: Taking taylor expansion of 0 in y
11.909 * [backup-simplify]: Simplify 0 into 0
11.910 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
11.910 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
11.911 * [backup-simplify]: Simplify (- 0) into 0
11.911 * [backup-simplify]: Simplify 0 into 0
11.911 * [backup-simplify]: Simplify 0 into 0
11.911 * [backup-simplify]: Simplify 0 into 0
11.911 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
11.911 * * * [progress]: simplifying candidates
11.912 * [simplify]: Simplifying:
  (fma x x (- (* y y)))
  (fma (- y) y (* y y))
  (expm1 (- (* x x) (* y y)))
  (log1p (- (* x x) (* y y)))
  (- (* y y))
  (/ (exp (* x x)) (exp (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (* (* (- (* x x) (* y y)) (- (* x x) (* y y))) (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow (* x x) 3) (pow (* y y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* y y) (* y y)) (* (* x x) (* y y))))
  (- (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
11.912 * * [simplify]: Extracting # 0 : cost  0
11.912 * * [simplify]: Extracting # 1 : cost  0
11.912 * * [simplify]: Extracting # 2 : cost  0
11.912 * * [simplify]: Extracting # 3 : cost  0
11.912 * * [simplify]: Extracting # 4 : cost  0
11.912 * * [simplify]: Extracting # 5 : cost  0
11.912 * * [simplify]: iteration  0 :  38  enodes  (cost  214 )
11.921 * * [simplify]: Extracting # 0 : cost  0
11.921 * * [simplify]: Extracting # 1 : cost  0
11.921 * * [simplify]: Extracting # 2 : cost  0
11.921 * * [simplify]: Extracting # 3 : cost  0
11.921 * * [simplify]: Extracting # 4 : cost  0
11.922 * * [simplify]: iteration  1 :  100  enodes  (cost  205 )
11.965 * * [simplify]: Extracting # 0 : cost  0
11.965 * * [simplify]: Extracting # 1 : cost  0
11.966 * * [simplify]: Extracting # 2 : cost  0
11.970 * * [simplify]: Extracting # 3 : cost  0
11.971 * * [simplify]: Extracting # 4 : cost  0
11.971 * * [simplify]: iteration  2 :  291  enodes  (cost  175 )
12.176 * * [simplify]: Extracting # 0 : cost  0
12.177 * * [simplify]: Extracting # 1 : cost  0
12.179 * * [simplify]: Extracting # 2 : cost  0
12.181 * * [simplify]: Extracting # 3 : cost  0
12.183 * * [simplify]: Extracting # 4 : cost  0
12.184 * * [simplify]: iteration  3 :  922  enodes  (cost  175 )
13.901 * * [simplify]: Extracting # 0 : cost  0
13.906 * * [simplify]: Extracting # 1 : cost  0
13.910 * * [simplify]: Extracting # 2 : cost  0
13.913 * * [simplify]: Extracting # 3 : cost  0
13.917 * * [simplify]: Extracting # 4 : cost  0
13.920 * * [simplify]: iteration  4 :  4017  enodes  (cost  170 )
15.452 * * [simplify]: Extracting # 0 : cost  0
15.461 * * [simplify]: Extracting # 1 : cost  0
15.477 * * [simplify]: iteration done:  5000  enodes  (cost  170 )
15.477 * [simplify]: Simplified to:
  (fma x x (- (* y y)))
  0
  (expm1 (- (* x x) (* y y)))
  (log1p (- (* x x) (* y y)))
  (- (* y y))
  (exp (- (* x x) (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (pow (fma x x (- (* y y))) 3)
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow x 6) (pow y 6))
  (fma (* y y) (fma x x (pow y 2)) (pow x 4))
  (- (* y y))
  (- (pow x 4) (pow y 4))
  (fma x x (pow y 2))
  (+ x y)
  (- x y)
  (- (* y y))
  (fma x x (- (* y y)))
  (fma x x (- (* y y)))
  (fma x x (- (* y y)))
15.477 * * * [progress]: adding candidates to table
15.514 * * [progress]: iteration 2 / 4
15.514 * * * [progress]: picking best candidate
15.516 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
15.516 * * * [progress]: localizing error
15.526 * * * [progress]: generating rewritten candidates
15.526 * * * [progress]: generating series expansions
15.526 * * * [progress]: simplifying candidates
15.527 * [simplify]: Simplifying:
  
15.527 * * [simplify]: Extracting # 0 : cost  0
15.527 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
15.527 * * [simplify]: Extracting # 0 : cost  0
15.527 * * [simplify]: iteration done:  0  enodes  (cost  0 )
15.527 * [simplify]: Simplified to:
  
15.527 * * * [progress]: adding candidates to table
15.527 * [progress]: [Phase 3 of 3] Extracting.
15.530 * [simplify]: Simplifying:
  (* (+ x y) (- x y))
15.530 * * [simplify]: Extracting # 0 : cost  0
15.530 * * [simplify]: Extracting # 1 : cost  0
15.530 * * [simplify]: Extracting # 2 : cost  0
15.530 * * [simplify]: Extracting # 3 : cost  0
15.530 * * [simplify]: Extracting # 4 : cost  0
15.530 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
15.531 * * [simplify]: Extracting # 0 : cost  0
15.531 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
15.531 * * [simplify]: Extracting # 0 : cost  0
15.531 * * [simplify]: iteration done:  7  enodes  (cost  7 )
15.531 * [simplify]: Simplified to:
  (* (+ x y) (- x y))
16.610 * [regime-testing]: End program error score: 0.0008751093886735842